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In Reply to: That's quite a neat implimentation of a muF... posted by Allen Wright on February 14, 2006 at 02:41:33:
Really? You like that? I always thought that the benefit, the reason why the output followed the mu of the bottom triode was that the top triode, or in this case the pentode, was floating. That's not the case with this circuit. Also, the triode's plate resistor is 220K. That seems enormous to me. So large is it that I wonder whether one could simply connect the top of the 220K resistor to V+. And if you look at the circuit modified in that way, you might see that this is just a ho-hum common cathode triode voltage amp connected to a pentode cathode follower with a large voltage swing. It is drawn like a mu follower, but I really wonder whether there is that benefit when the cathode of the top pentode is grounded.
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Follow Ups
- Re: That's quite a neat implimentation of a muF... - corerosin 08:39:40 02/14/06 (5)
- Really? You like that? - Allen Wright 13:02:19 02/14/06 (4)
- Re: Really? You like that? - corerosin 21:34:46 02/14/06 (3)
- No longer... - Allen Wright 04:18:27 02/15/06 (2)
- Re: No longer... - corerosin 13:49:29 02/15/06 (1)
- Well, I guess we have trashed this poor French guy's design pretty well - Allen Wright 15:41:20 02/15/06 (0)
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